Show more appropriate error message on Forgot Password screen when em…

…ail is not in our system

_locales/en/messages.json

@@ -32,6 +32,9 @@
 	"banner_no_such_account_message": {
 		"message": "Looks like we can't find this email and password combo. Give it another shot."
 	},
+	"banner_email_not_in_system_message": {
+		"message": "Sorry, that email isn't in our system."
+	},
 	"blacklist_error_duplicate_url": {
 		"message": "This site is already restricted."
 	},

app/panel/reducers/panel.js

@@ -180,7 +180,7 @@ export default (state = initialState, action) => {
 				switch (err.code) {
 					case '10050':
 					case '10110':
-						errorText = t('banner_no_such_account_message');
+						errorText = t('banner_email_not_in_system_message');
 						break;
 					default:
 						errorText = t('server_error_message');